Neuromusculoskeletal System and Surface Anatomy Practice Flashcards

Vocabulary and anatomical definitions based on the Neuromusculoskeletal system lecture and carpal tunnel syndrome case study.

Bony landmarks for flexibility testing

Includes the styloid process of ulna, base of third metacarpal, centre of wrist joint dorsal side, medial epicondyle of humerus, lateral epicondyle of humerus, 2nd and 3rd metacarpals, 5th metacarpal, and pisiform carpal.

Carpal tunnel contents

Includes the Flexor digitorum superficialis, Flexor digitorum profundus, Flexor pollicis longus, and the Median nerve.

Carpal Tunnel Syndrome (CTS)

A condition where a nerve from the anterior forearm travels through the carpal tunnel into the hand and is compressed in that same region.

Median nerve fibre composition

Consists of both sensory $\frac{1}{2}$ and motor fibres $\frac{1}{2}$.

Median nerve sensory supply

Provides sensory supply to the thumb, index, middle, and part of the ring finger.

Thenar group

The muscle group innervated by the median nerve.

CTS Sensory symptoms

Numbness and tingling.

CTS Motor/Functional deficits

Weakness and less dexterity, such as difficulty using scissors or fastening buttons.

Distal radioulnar joint

A pivot type joint.

Radiocarpal joint

A condyloid type joint.

Ulnar deviation

Moving the wrist toward the little finger side.

Thumb carpometacarpal (CMC) joint

A saddle type joint.

Interphalangeal joints

Joints in the fingers that allow flexion and extension only.

Radial nerve (wrist innervation)

The nerve that supplies the wrist extensor muscles.

Thenar eminence muscles innervation

All three muscles are innervated by the median nerve.

Peak grip strength age range

Generally occurs during the range of $25-40$ years.

Radiocarpal joint stability

Provided by the radial collateral and ulnar collateral ligaments.

Radial nerve function (dorsal hand)

Provides sensory innervation only.